Merge branch 'master' into 'master'

Marius Burkard

2015-12-23 6a00b4e599f724cbc9a12927c8a0446ef5621028

 install/update.php

@@ -174,6 +174,7 @@
$conf['ispconfig_log_priority'] = $conf_old["log_priority"];

$inst = new installer();
if (!$inst->get_php_version()) die('ISPConfig requieres PHP '.$inst->min_php."\n");
$inst->is_update = true;

//** Detect the installed applications